Performance model-based reliability simulation analysis of multi-state electromechanical system

Base on the research on common methods of reliability modeling for multi-state system, performance model-based technique, which overcoming the shortages of the existing methods, is proposed to solve reliability analysis and evaluation for complex electromechanical system with multi-state fault features in this paper. The main idea about this technology can be demonstrated as follows. The components fault modeling need to be finished based on the system performance model at first, by describing the continuous variation of performance parameters to simulate the process of components degradation from the normal to the complete failure. Then, components fault injecting to the performance model also need to be used to analyze the response of system under fault state. At last, system reliability evaluation could be achieved depending on the first two steps. This paper takes the fuel pump as a case study, and the results show that performance model-based reliability simulation technique is suitable for the reliability evaluation of typical electromechanical systems in most aviation equipments.